Predicted to contribute to phosphatidylinositol N-acetylglucosaminyltransferase activity. Predicted to be involved in GPI anchor biosynthetic process. Predicted to be integral component of membrane. Predicted to be part of glycosylphosphatidylinositol-N-acetylglucosaminyltransferase (GPI-GnT) complex. Predicted to be active in endoplasmic reticulum. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 77. Orthologous to human PIGQ (phosphatidylinositol glycan anchor biosynthesis class Q). [provided by Alliance of Genome Resources, Apr 2022]